[Prognostic value of amniotic fluid index estimated during labor during chronic fetal acidosis].

There were performed measurements of AFI in 32 women during labour and they were referred to pH of neonatal umbilical vein. It was proved by significant statistic relation p = 0.034 (r = 0.375) between AFI and pH of umbilical vein blood. In anticipation of fetal acidosis with AFI < or = 5 cm with pH < or = 7.25 it was determined that: sensitivity 66.7%, specificity 58.6%, positive predictive value 14.3%, negative predictive value 94.4%, false positive 85.7%, false negative 5.6%, accuracy 59.4%. Obtained data do not differ from those given in literature. Measurements of AFI < or = 5 cm help in identification of the risk group (fetus in danger, of acidosis during labour) but due to low specificity and low positive predictive value (66.7% and 14.3% respectively). Clinical decisions should be made after consideration the result of the other tests of fetal well-being.